- 专利标题： STEEL SHEET PLATED WITH AL-FE FOR HOT PRESS FORMING HAVING EXCELLENT CORROSION RESISTANCE AND SPOT WELDABILITY, AND MANUFACTURING METHOD THEREOF
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申请号： US17983759申请日： 2022-11-09
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公开(公告)号： US20230086620A1公开(公告)日： 2023-03-23
- 发明人: Jin-Keun Oh , Seong-Woo Kim , Sang-Heon Kim , Yeol-Rae Cho
- 申请人： POSCO
- 申请人地址： KR Pohang-si
- 专利权人： POSCO
- 当前专利权人： POSCO
- 当前专利权人地址： KR Pohang-si
- 优先权： KR10-2018-0152572 20181130,KR10-2019-0156855 20191129
- 主分类号： B32B15/01
- IPC分类号： B32B15/01 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/28 ; C22C38/32 ; C23C2/12 ; C23C2/28 ; C23C2/40 ; C23C24/04 ; C23C28/02
摘要：
The present invention provides a steel sheet plated with aluminum-iron and a preparation method therefor, the steel sheet comprising: a base steel sheet; and a plated layer formed on the surface of the base steel sheet and comprising: an alloyed layer containing at least one of Fe3Al, FeAl(Si), Fe2Al5, and FeAl3; and an aluminum layer formed on the alloyed layer and having a thickness less than 10% of that of the plated layer, wherein the plated layer is 20-35 μm in thickness and contains 1-20 wt % of Mg as measured by GDS at a position 0.1 μm deep from the surface of the plated layer and 10 wt % of oxygen as measured by GDS at a position 0.1 μm deep from the surface of the plated layer.